Patent US4057082A successfully refreshed from Google Patents.
US4057082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipelines
Assignee: BP PLC
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Filing: 1976-06-02
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Granted: 1977-11-08
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Expires: 1996-06-02
Abstract
Abstract A leak repair apparatus for use on an underwater pipeline has a compressible sealing element and a clamp which by means of screws and chains (passing around the pipeline) applies pressure to the sealing element to seal the leak.
Inventors
- 👤 Robert Paul King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:47
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/16; F16L55/168; F16L55/17; F16L55/1705; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1412; Y10T24/1439; Y10T24/44; Y10T24/44573; Y10T24/4459; Y10T24/44598
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
162 words
An apparatus for the repair of a pipeline having a hole in the wall thereof and suitable for withstanding an internal pipeline pressure of up to 3000 psi comprising: a. a compressible sealing element; b. a holder for holding the sealing element against the outer surface of the wall of the pipeline; c. means for applying pressure to the sealing element radially inwardly with respect to the pipeline to compress the sealing element against the surface thereof around the hole and for maintaining the holder on the pipeline against the reaction of the applied pressure comprising an elongate flexible member to be placed around the pipeline and holder and capable of being tensioned and means for applying tension to the elongate flexible member; and d. means to prevent extrusion of the sealing element comprising a ring of rods disposed so that their axes are lying mutually parallel and their inner ends contact the pipeline surface around the sealing element within the holder.
Claim 2
Independent Claim
162 words
An apparatus for the repair of a pipeline having a hole in the wall thereof and suitable for withstanding an internal pipeline pressure of up to 3000 psi comprising: a. a compressible sealing element; b. a holder for holding the sealing element against the outer surface of the wall of the pipeline; c. means for applying pressure to the sealing element radially inwardly with respect to the pipeline to compress the sealing element against the surface thereof around the hole and for maintaining the holder on the pipeline against the reaction of the applied pressure comprising an elongate flexible member to be placed around the pipeline and holder and capable of being tensioned and means for applying tension to the elongate flexible member; and d. means to prevent extrusion of the sealing element comprising a ring of rods disposed so that their axes are lying mutually parallel and their inner ends contact the pipeline surface around the sealing element within the holder.
Claim 3
Dependent Claim
57 words
An apparatus as claimed in claim 1 wherein the means for applying pressure to the sealing element comprises a member movable relative to the holder in a direction radial with respect to the pipeline for pressing the sealing element against the outer surface of the wall of the pipeline and screw means for moving said movable member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-07 | 1981-05-09 | 1981-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-07 | 1985-05-09 | 1985-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-07 | 1989-05-09 | 1989-11-08 | $7700.00 | Window Closed / Lapsed |